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885 | decky | 1 | /* |
2071 | jermar | 2 | * Copyright (c) 2005 Martin Decky |
3 | * Copyright (c) 2006 Jakub Jermar |
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885 | decky | 4 | * All rights reserved. |
5 | * |
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6 | * Redistribution and use in source and binary forms, with or without |
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7 | * modification, are permitted provided that the following conditions |
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8 | * are met: |
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9 | * |
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10 | * - Redistributions of source code must retain the above copyright |
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11 | * notice, this list of conditions and the following disclaimer. |
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12 | * - Redistributions in binary form must reproduce the above copyright |
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13 | * notice, this list of conditions and the following disclaimer in the |
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14 | * documentation and/or other materials provided with the distribution. |
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15 | * - The name of the author may not be used to endorse or promote products |
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16 | * derived from this software without specific prior written permission. |
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17 | * |
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18 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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19 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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20 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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21 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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22 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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23 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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24 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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25 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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26 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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27 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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28 | */ |
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1789 | jermar | 29 | |
30 | /** |
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31 | * @file |
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32 | * @brief Architecture dependent parts of OpenFirmware interface. |
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33 | */ |
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34 | |||
35 | #include <ofwarch.h> |
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1764 | jermar | 36 | #include <ofw.h> |
37 | #include <printf.h> |
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1881 | jermar | 38 | #include <string.h> |
1903 | jermar | 39 | #include <register.h> |
1881 | jermar | 40 | #include "main.h" |
1978 | jermar | 41 | #include "asm.h" |
885 | decky | 42 | |
1764 | jermar | 43 | void write(const char *str, const int len) |
885 | decky | 44 | { |
1773 | jermar | 45 | int i; |
46 | |||
47 | for (i = 0; i < len; i++) { |
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48 | if (str[i] == '\n') |
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49 | ofw_write("\r", 1); |
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50 | ofw_write(&str[i], 1); |
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51 | } |
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885 | decky | 52 | } |
1783 | jermar | 53 | |
54 | int ofw_translate_failed(ofw_arg_t flag) |
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55 | { |
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56 | return flag != -1; |
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57 | } |
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1789 | jermar | 58 | |
3467 | rimsky | 59 | /* |
60 | * Node among whose children the CPU nodes are located. |
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61 | */ |
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62 | #if defined (OPEN_BOOT) |
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63 | #define CPUS_PARENT_NODE ofw_root |
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64 | #elif defined (SMART_FIRMWARE) |
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65 | #define CPUS_PARENT_NODE ofw_find_device("/ssm@0,0") |
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66 | #endif |
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67 | |||
68 | |||
1899 | jermar | 69 | int ofw_cpu(void) |
1881 | jermar | 70 | { |
71 | char type_name[BUF_SIZE]; |
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72 | |||
73 | phandle node; |
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3467 | rimsky | 74 | node = ofw_get_child_node(CPUS_PARENT_NODE); |
75 | |||
1881 | jermar | 76 | if (node == 0 || node == -1) { |
77 | printf("Could not find any child nodes of the root node.\n"); |
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1899 | jermar | 78 | return 0; |
1881 | jermar | 79 | } |
80 | |||
1899 | jermar | 81 | uint64_t current_mid; |
82 | |||
3146 | jermar | 83 | asm volatile ("ldxa [%1] %2, %0\n" |
84 | : "=r" (current_mid) |
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85 | : "r" (0), "i" (ASI_UPA_CONFIG)); |
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1899 | jermar | 86 | current_mid >>= UPA_CONFIG_MID_SHIFT; |
87 | current_mid &= UPA_CONFIG_MID_MASK; |
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1903 | jermar | 88 | |
89 | int cpus; |
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1899 | jermar | 90 | |
3146 | jermar | 91 | for (cpus = 0; node != 0 && node != -1; node = ofw_get_peer_node(node), |
92 | cpus++) { |
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93 | if (ofw_get_property(node, "device_type", type_name, |
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94 | sizeof(type_name)) > 0) { |
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1896 | jermar | 95 | if (strcmp(type_name, "cpu") == 0) { |
1899 | jermar | 96 | uint32_t mid; |
1881 | jermar | 97 | |
3467 | rimsky | 98 | /* "upa-portid" for US, "portid" for US-III */ |
99 | if (ofw_get_property( |
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100 | node, "upa-portid", |
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101 | &mid, sizeof(mid)) <= 0 |
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102 | && ofw_get_property(node, "portid", |
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103 | &mid, sizeof(mid)) <= 0) |
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1881 | jermar | 104 | continue; |
105 | |||
1899 | jermar | 106 | if (current_mid != mid) { |
107 | /* |
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108 | * Start secondary processor. |
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109 | */ |
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3146 | jermar | 110 | (void) ofw_call("SUNW,start-cpu", 3, 1, |
111 | NULL, node, KERNEL_VIRTUAL_ADDRESS, |
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112 | bootinfo.physmem_start | |
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113 | AP_PROCESSOR); |
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1899 | jermar | 114 | } |
1881 | jermar | 115 | } |
116 | } |
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1899 | jermar | 117 | } |
1881 | jermar | 118 | |
1903 | jermar | 119 | return cpus; |
1881 | jermar | 120 | } |
1978 | jermar | 121 | |
122 | /** Get physical memory starting address. |
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123 | * |
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124 | * @param start Pointer to variable where the physical memory starting |
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125 | * address will be stored. |
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126 | * |
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127 | * @return Non-zero on succes, zero on failure. |
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128 | */ |
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129 | int ofw_get_physmem_start(uintptr_t *start) |
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130 | { |
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131 | uint32_t memreg[4]; |
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132 | |||
133 | if (ofw_get_property(ofw_memory, "reg", &memreg, sizeof(memreg)) <= 0) |
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134 | return 0; |
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135 | |||
136 | *start = (((uint64_t) memreg[0]) << 32) | memreg[1]; |
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137 | return 1; |
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138 | } |
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139 |